Definition of "Inventory" :

noun: making an itemized list of merchandise or supplies on hand

"An inventory may be necessary to see if anything is missing."

noun: the merchandise that a shop has on hand

"They carried a vast inventory of hardware."

noun: a collection of resources

noun: a detailed list of all the items in stock

noun: (accounting) the value of a firm's current assets including raw materials and work in progress and finished goods

verb: make or include in an itemized record or report

"Inventory all books before the end of the year."